Unit 4 - Our Universe

Front

What are blue stars known for?

Back

Blue stars are the hottest stars in the universe.

Front

What is a supernova?

Back

A supernova is a gigantic explosion that occurs at the end of a massive star's life.

Front

What do main sequence stars fuse in their cores?

Back

Main sequence stars fuse hydrogen into helium in their cores.

Front

What is the correct order of the life cycle of massive stars?

Back

Nebula -> protostar -> main sequence -> red supergiant -> supernova -> black hole.

Front

What are white dwarfs?

Back

White dwarfs are small, hot, faint objects that are remnants of stars.

Front

What is a nebula?

Back

A nebula is a giant cloud of dust and gas in space, often the birthplace of stars.

Front

What is a protostar?

Back

A protostar is a young star that is still in the process of forming.

Front

What happens during the red supergiant phase?

Back

During the red supergiant phase, a star expands and cools after exhausting its hydrogen fuel.

Front

What is the difference between a black hole and a neutron star?

Back

A black hole is a region of space with a gravitational pull so strong that nothing can escape, while a neutron star is the collapsed core of a massive star, incredibly dense but not massive enough to become a black hole.

Front

What is the life cycle of a low-mass star?

Back

Nebula -> protostar -> main sequence -> red giant -> planetary nebula -> white dwarf.